Margaret Poyntz born 1240

Looking for the mother of Margaret Poyntz. Margaret was born 1240. Her father was William Poyntz born 1210.She married Henry Frowicke born 1240, son of Reginald Frowicke born 1210.Margaret and Henry had a son Thomas Frowicke born 1270.Thomas married Margaret Dereham.Thomas Frowicke and Margaret Dereham had a son Henry Frowicke born 1300 and died about 1384.(got this information off the internet and have not documented it as yet in books.)